Encyclopedic Dictionary of Polymers

2011 Edition
| Editors: Jan W. Gooch

Rubber, Natural

  • Jan W. Gooch
Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-6247-8_10194

n (India rubber, Caoutchouc) An amorphous polymer consisting essentially of cis-1,4-polyisoprene, obtained from the sap (latex) of certain trees and plants, mainly the Hevea brasiliensis tree. The material is shipped from tropical plantations in one of two primary forms: latex, usually stabilized and preserved with ammonia and centrifuged to remove part of the water; or sheets made by milling the coagulum from the latex. Natural rubber has very high molecular weight and is usually masticated to reduce the molecular weight and improve processability. A major use is sidewalls of automotive tires.

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Jan W. Gooch
    • 1
  1. 1.AtlantaUSA